mlx4: use napi_consume_skb API to get bulk free operations

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Bulk free of SKBs happen transparently by the API call napi_consume_skb().
The napi budget parameter is usually needed by napi_consume_skb()
to detect if called from netpoll.  In this patch it has an extra meaning.

For mlx4 driver, the mlx4_en_stop_port() call is done outside
NAPI/softirq context, and cleanup the entire TX ring via
mlx4_en_free_tx_buf().  The code mlx4_en_free_tx_desc() for
freeing SKBs are shared with NAPI calls.

To handle this shared use the zero budget indication is reused,
and handled appropriately in napi_consume_skb(). To reflect this,
variable is called napi_mode for the function call that needed
this distinction.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jesper Dangaard Brouer 2016-03-11 09:44:08 +01:00 • committed by David S. Miller

parent 885eb0a516

commit b4a53379a0

1 changed files with 9 additions and 6 deletions

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15

drivers/net/ethernet/mellanox/mlx4/en_tx.c

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